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88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
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// Copyright Oliver Kowalke 2009.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#define BOOST_COROUTINES_SOURCE
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#include "boost/coroutine/detail/coroutine_context.hpp"
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#if defined(BOOST_USE_SEGMENTED_STACKS)
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extern "C" {
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void __splitstack_getcontext( void * [BOOST_COROUTINES_SEGMENTS]);
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void __splitstack_setcontext( void * [BOOST_COROUTINES_SEGMENTS]);
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void __splitstack_releasecontext (void * [BOOST_COROUTINES_SEGMENTS]);
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void __splitstack_block_signals_context( void * [BOOST_COROUTINES_SEGMENTS], int *, int *);
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}
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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namespace boost {
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namespace coroutines {
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namespace detail {
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coroutine_context::coroutine_context() :
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fcontext_t(), stack_ctx_( this), ctx_( this)
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{
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#if defined(BOOST_USE_SEGMENTED_STACKS)
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__splitstack_getcontext( stack_ctx_->segments_ctx);
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#endif
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}
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coroutine_context::coroutine_context( ctx_fn fn, stack_context * stack_ctx) :
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fcontext_t(), stack_ctx_( stack_ctx),
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ctx_( context::make_fcontext( stack_ctx_->sp, stack_ctx_->size, fn) )
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{}
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coroutine_context::coroutine_context( coroutine_context const& other) :
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fcontext_t(),
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stack_ctx_( other.stack_ctx_),
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ctx_( other.ctx_)
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{}
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coroutine_context &
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coroutine_context::operator=( coroutine_context const& other)
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{
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if ( this == & other) return * this;
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stack_ctx_ = other.stack_ctx_;
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ctx_ = other.ctx_;
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return * this;
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}
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intptr_t
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coroutine_context::jump( coroutine_context & other, intptr_t param, bool preserve_fpu)
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{
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#if defined(BOOST_USE_SEGMENTED_STACKS)
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BOOST_ASSERT( stack_ctx_);
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BOOST_ASSERT( other.stack_ctx_);
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__splitstack_getcontext( stack_ctx_->segments_ctx);
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__splitstack_setcontext( other.stack_ctx_->segments_ctx);
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intptr_t ret = context::jump_fcontext( ctx_, other.ctx_, param, preserve_fpu);
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BOOST_ASSERT( stack_ctx_);
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__splitstack_setcontext( stack_ctx_->segments_ctx);
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return ret;
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#else
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return context::jump_fcontext( ctx_, other.ctx_, param, preserve_fpu);
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#endif
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}
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}}}
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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